webkitgtk-2.10.2webkitgtk-2.10.2

1 files changed, 131 insertions, 0 deletions

diff --git a/Source/JavaScriptCore/runtime/Identifier.cpp b/Source/JavaScriptCore/runtime/Identifier.cpp
new file mode 100644
index 000000000..d26d9567c
--- /dev/null
+++ b/Source/JavaScriptCore/runtime/Identifier.cpp
@@ -0,0 +1,131 @@
+/*
+ *  Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2012 Apple Inc. All rights reserved.
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Library General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2 of the License, or (at your option) any later version.
+ *
+ *  This library is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *  Library General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Library General Public License
+ *  along with this library; see the file COPYING.LIB.  If not, write to
+ *  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ *  Boston, MA 02110-1301, USA.
+ *
+ */
+
+#include "config.h"
+#include "Identifier.h"
+
+#include "CallFrame.h"
+#include "JSObject.h"
+#include "JSScope.h"
+#include "NumericStrings.h"
+#include "JSCInlines.h"
+#include <new>
+#include <string.h>
+#include <wtf/Assertions.h>
+#include <wtf/FastMalloc.h>
+#include <wtf/HashSet.h>
+#include <wtf/text/ASCIIFastPath.h>
+#include <wtf/text/StringHash.h>
+
+using WTF::ThreadSpecific;
+
+namespace JSC {
+
+Ref<StringImpl> Identifier::add(VM* vm, const char* c)
+{
+    ASSERT(c);
+    ASSERT(c[0]);
+    if (!c[1])
+        return *vm->smallStrings.singleCharacterStringRep(c[0]);
+
+    return *AtomicStringImpl::add(c);
+}
+
+Ref<StringImpl> Identifier::add(ExecState* exec, const char* c)
+{
+    return add(&exec->vm(), c);
+}
+
+Ref<StringImpl> Identifier::add8(VM* vm, const UChar* s, int length)
+{
+    if (length == 1) {
+        UChar c = s[0];
+        ASSERT(c <= 0xff);
+        if (canUseSingleCharacterString(c))
+            return *vm->smallStrings.singleCharacterStringRep(c);
+    }
+    if (!length)
+        return *StringImpl::empty();
+
+    return *AtomicStringImpl::add(s, length);
+}
+
+Identifier Identifier::from(ExecState* exec, unsigned value)
+{
+    return Identifier(exec, exec->vm().numericStrings.add(value));
+}
+
+Identifier Identifier::from(ExecState* exec, int value)
+{
+    return Identifier(exec, exec->vm().numericStrings.add(value));
+}
+
+Identifier Identifier::from(ExecState* exec, double value)
+{
+    return Identifier(exec, exec->vm().numericStrings.add(value));
+}
+
+Identifier Identifier::from(VM* vm, unsigned value)
+{
+    return Identifier(vm, vm->numericStrings.add(value));
+}
+
+Identifier Identifier::from(VM* vm, int value)
+{
+    return Identifier(vm, vm->numericStrings.add(value));
+}
+
+Identifier Identifier::from(VM* vm, double value)
+{
+    return Identifier(vm, vm->numericStrings.add(value));
+}
+
+void Identifier::dump(PrintStream& out) const
+{
+    if (impl())
+        out.print(impl());
+    else
+        out.print("<null identifier>");
+}
+
+#ifndef NDEBUG
+
+void Identifier::checkCurrentAtomicStringTable(VM* vm)
+{
+    // Check the identifier table accessible through the threadspecific matches the
+    // vm's identifier table.
+    ASSERT_UNUSED(vm, vm->atomicStringTable() == wtfThreadData().atomicStringTable());
+}
+
+void Identifier::checkCurrentAtomicStringTable(ExecState* exec)
+{
+    checkCurrentAtomicStringTable(&exec->vm());
+}
+
+#else
+
+// These only exists so that our exports are the same for debug and release builds.
+// This would be an RELEASE_ASSERT_NOT_REACHED(), but we're in NDEBUG only code here!
+NO_RETURN_DUE_TO_CRASH void Identifier::checkCurrentAtomicStringTable(VM*) { CRASH(); }
+NO_RETURN_DUE_TO_CRASH void Identifier::checkCurrentAtomicStringTable(ExecState*) { CRASH(); }
+
+#endif
+
+} // namespace JSC